Problem with shader showing blue

Support Materials and Textures
1

here the video https://youtu.be/MFA2QSc8P98
i’ve imported a mesh from blender 2.79 i changed the shader and anyway it shows a a blue color

2

Schermata da 2021-06-02 11-24-23
Schermata da 2021-06-02 11-24-23693×1001 292 KB

solved, uncheck face orientation in viewport overlays